Gagarin's Start is a launch site at Baikonur Cosmodrome in Kazakhstan, used for the Soviet space program and now managed by Roscosmos State Corporation.

The launchpad for the world's first human spaceflight made by Yuri Gagarin on Vostok 1 in 1961, the site was referred to as Site No.1 as the first one of its kind. It is also sometimes referred to as NIIP-5 LC1, Baikonur LC1 or GIK-5 LC1.

Source: Wikipedia